v1.0.43: Replace background and sound effects with own artwork

The Pexels forest photo is replaced by the author's own background, so
its credit is dropped from the Licenses screen (all six locales) and the
NonFreeAssets anti-feature is removed from the F-Droid recipe. Sound
effects are replaced as well, and the old generator script in tools/ is
removed. Settings no longer duplicates the opening-bar switch, which
lives in Appearance.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015g6ECVSKcBG8CJPrqC3G5o

1.0.42

Remove banner, replace screenshots with new set

1.0.41

Remove banner, replace screenshots with new set

v1.0.40

Remove banner, replace screenshots with new set

v1.0.39

Remove banner, replace screenshots with new set

v1.0.38

Remove banner, replace screenshots with new set

v1.0.37

Remove banner, replace screenshots with new set

v1.0.36

Remove banner, replace screenshots with new set

v1.0.35

Remove banner, replace screenshots with new set

v1.0.34

Remove banner, replace screenshots with new set